openlane/user_project_wrapper/pdn.tcl

# SPDX-FileCopyrightText: 2020 Efabless Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# SPDX-License-Identifier: Apache-2.0
# Power nets
set ::power_nets [list $::env(VDD_PIN) ::env(_VDD_NET_NAME)]
set ::ground_nets [list $::env(GND_PIN) ::env(_GND_NET_NAME)]

set ::macro_blockage_layer_list "li1 met1 met2 met3 met4 met5"

pdngen::specify_grid stdcell {
    name grid
    core_ring {
                met5 {width $::env(_WIDTH) spacing $::env(_SPACING) core_offset $::env(_H_OFFSET)}
                met4 {width $::env(_WIDTH) spacing $::env(_SPACING) core_offset $::env(_V_OFFSET)}
        }
    rails {
    }
    straps {
	    met4 {width 1.6 pitch $::env(FP_PDN_VPITCH) offset $::env(FP_PDN_VOFFSET)}
	    met5 {width 1.6 pitch $::env(FP_PDN_HPITCH) offset $::env(FP_PDN_HOFFSET)}
    }
   connect {{met4 met5}}
}

pdngen::specify_grid macro {
    power_pins "VPWR"
    ground_pins "VGND"
    blockages "li1 met1 met2 met3 met4"
    straps { 
    } 
    connect {{met4_PIN_ver met5}}
}

set ::halo 10

# POWER or GROUND #Std. cell rails starting with power or ground rails at the bottom of the core area
set ::rails_start_with "POWER" ;

# POWER or GROUND #Upper metal stripes starting with power or ground rails at the left/bottom of the core area
set ::stripes_start_with "POWER" ;